<!DOCTYPE html>
<html>
<head>
    <title>{% block title %}{% endblock %}</title>
	<style>
		{% block style %}
		{% endblock %}
	</style>
</head>
<body>
<div id="header">
This is header
</div>
{% block menu %}
{% endblock %}
<div id="main">
Main Block
</div>
<div id="footer">
Copyright
</div>
</body>
</html>